A proposal has been submitted for the construction of a new art gallery. The total expense of the project is 250 million dollars and the Queensland State Government is planning to fund the entire project without federal government support. Every Queensland resident (5.2 million residents) receives a one off cultural benefit of 23 ($/resident) with this construction that is not directly related to art gallery visitors. If the number of visitors is estimated to be 3.1 million, what is the minimum that visitors must value the new art gallery if the project is to be efficient?